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1.
(0.1667) (0.8333) (0.3333)
(0.2222) (0.6667) (0.1250)
  is approximately equal to:      
  • A.
    2
  • C.
    2.43
  • B.
    2.40
  • D.
    2.50
  • Answer & Explanation
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Answer : [D]
Explanation :
 
Given expression =
0.3333
0.2222
x
(0.1667) (0.8333)
(0.6667) (0.1250)
=
3333
2222
x
1 x 5
6 6
2 x 125
3 1000
     
 
=   
3
2
x
1
6
x
5
6
x
3
2
 x 8   =
5
2
 = 2.50      
 
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2.
The number 518,000,000 when expressed in scientific notation, equals :
  • A.
    51.8 x 106
  • C.
    5.18 x 108
  • B.
    51.8 x 107
  • D.
    5.18 x 109
  • Answer & Explanation
  • Report
Answer : [C]
Explanation :
 
518,000,000 = 5.18 x 100000000 = 5.18 x 108
 
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3.
Let F = 0.84181. When F is written as a fraction in lowest terms, the denominator exceeds the numerator by:
  • A.
    13
  • C.
    29
  • B.
    14
  • D.
    87
  • Answer & Explanation
  • Report
Answer : [D]
Explanation :
 
0.84181 =
84181 - 841
99000
=
83340
99000
=
463
550
     
 
      Required difference = (550 – 463) = 87.  
 
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4.
What is the difference between the biggest and the smallest fraction among
2
3
,
3
4
,
4
5
and
5
6
 ?
  • A.
    		 1  
    6  
  • C.
    		 1  
    20  
  • B.
    		 1    
    12  
  • D.
    		 1    
    30  
  • Answer & Explanation
  • Report
Answer : [A]
Explanation :
 
Converting each of the given fractions into decimal form, we get:
 
2
3
= 0.66,
3
4
  = 0.75,
4
5
 = 0.8,
5
6
 = 0.833.    
 
Since 0.833 > 0.8 > 0.75 > 0.66, so
5
6
>
4
5
>
3
4
>
2
3
       
 
 
Required difference =  
5
6
-
2
3
  =
1
6
       
 
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5.
.04 x ? = .000016
  • A.
    0.0004
  • C.
    4
  • B.
    0.04
  • D.
    None of these
  • Answer & Explanation
  • Report
Answer : [A]
Explanation :
 
Let .04 x x = .000016. Then, x =
.000016
.04
=
.0016
4
 = .0004  
 
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